Showing results 1-6 of 6

Concrete or clay tiles – roof sagging

Corroded metal roof flashings

  • Air-borne salt, dust or dirt accumulating under flashings

    How to repair

  • The paint finish has deteriorated, exposing steel 

    How to repair

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Sheet membrane roofing springy or spongy to walk on

  • Damage to the substrate and/or framing due to water entry through the membrane or through adjacent wall claddings 

    How to repair

  • The substrate material is not thick enough to span rafters/joists

    How to repair

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Corrosion: red rust on galvanised mild steel cladding

  • Galvanised coating has eroded to expose bare metal

    How to repair

  • Profiled metal cladding is in contact with or has run-off from cedar or redwood, or timber treated with copper-based preservative treatment 

    How to repair

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Red rust on zinc/aluminium or aluminium/zinc alloy-coated steel

  • Corrosion of the steel when zinc/aluminium alloy coating has eroded to expose the steel

    How to repair

  • Cladding material in contact with or has run-off from cedar or redwood, or timber treated with a copper-based preservative treatment 

    How to repair

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Resin appearing on surface of timber weatherboards

  • Preservative treatment solvents causing resin bleeding in the timber, particularly pinus radiata timber where the treatment is light organic solvent preservative-treated (LOSP) 

    How to repair

  • Changes of temperature of timber, particularly where darker-coloured paint finishes have been used

    How to repair